Hetherington; Robert D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hetherington; Robert D..The latest application filed is for "precision metered multiple fluid pumping system".
- Hetherington; Robert D. - Sunland CA
| Patent | Date |
|---|---|
| Precision metered multiple fluid pumping system Grant 5,599,177 - Hetherington February 4, 1 | 1997-02-04 |
| High pressure piston pump for fluent materials Grant 5,094,596 - Erwin , et al. March 10, 1 | 1992-03-10 |
| Fiberglass reinforce product spray gun with roving cutter steering mechanism Grant 4,770,117 - Hetherington , et al. September 13, 1 | 1988-09-13 |
| Plural component spray gun convertible from air atomizing to airless Grant 4,361,283 - Hetherington , et al. November 30, 1 | 1982-11-30 |
| Pumping system for unstable fluids Grant 4,350,266 - Hetherington , et al. September 21, 1 | 1982-09-21 |
| Modular multiple-fluid component selection and delivery system Grant 4,281,683 - Hetherington , et al. * August 4, 1 | 1981-08-04 |
| Modular multiple-fluid component selection and delivery system Grant 4,215,721 - Hetherington , et al. August 5, 1 | 1980-08-05 |
| High-viscosity volume balancing mixing head Grant 4,193,546 - Hetherington , et al. March 18, 1 | 1980-03-18 |
| Fluid Valve And Mixing Assembly Grant 3,763,876 - Freeman , et al. October 9, 1 | 1973-10-09 |
| Fluid Mixing And Spraying Apparatus Grant 3,759,450 - Fram , et al. September 18, 1 | 1973-09-18 |
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